Effect of Different Relay Intercropping Patterns on Soil Fertility and Economic Benefits in Southwest China

doi:10.11924/j.issn.1000-6850.casb16060075

Abstract

Abstract: To explore the effect of different crop arrangements on the economic benefits and yearly soil fertility, and aims to find a low input and high output relay intercropping patterns. The research used a randomized complete block design experiment to research soil fertility, yield and economic benefit in four relay intercropping patterns (wheat/maize/soybean, wheat/maize/sweet potato, wheat/sorghum/soybean and potato/maize/soybean). The soil nutrient maintained or improved after planting for continuous three years (except available K); the sweet potato stubble absorbed a large amount of total K and available K, therefore, the application of K fertilizer should be increased; the wheat/maize/potato got the maximum total yield, while the wheat/maize/soybean got the maximum soybean yield. There was no significant difference of wheat yield. The economic benefits of different patterns showed wheat/maize/soybean>potato/maize/soybean>wheat/maize/sweet potato>wheat/sorghum/soybean. Compared with other relay intercropping patterns, wheat/maize/soybean achieved the highest economic benefit (14196.41 yuan/ha) and the highest output-input ratio (3.69:1), moreover, soybean stubble can activate soil nutrient, therefore, wheat/maize/soybean can be regarded as the best crop arrangement for relay intercropping.

CLC Number:

Liu Xin,Chen Xiaorong,Yong Taiwen,Song Chun,Liu Weiguo,Wang Xiaochun,Yang Feng,Wu Xiaoling and Yang Wenyu. Effect of Different Relay Intercropping Patterns on Soil Fertility and Economic Benefits in Southwest China[J]. Chinese Agricultural Science Bulletin, 2017, 33(15): 104-109.

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